EP 0082656 A2 19830629 - Preparation of cepham derivatives.
Title (en)
Preparation of cepham derivatives.
Title (de)
Herstellung von Cephamderivaten.
Title (fr)
Préparation de dérivés céphame.
Publication
Application
Priority
- US 33315481 A 19811221
- US 33315681 A 19811221
Abstract (en)
There is described the production of a 7-epi-3-exomethylenecepham, useful in the synthesis of antibiotic compounds, by a process which comprises reducing a sulfoxide of formula (II): <CHEM> or acetoxymethyl derivative of formula (III), <CHEM> when n is 0 or 1 and R is hydrogen or an acyl group and R<1> is hydrogen, a carboxy-protecting group, or a cation.
IPC 1-7
IPC 8 full level
C07D 205/095 (2006.01); C07D 498/04 (2006.01); C07D 499/00 (2006.01); C07D 501/04 (2006.01); C07D 501/14 (2006.01)
CPC (source: EP KR)
C07D 205/095 (2013.01 - EP); C07D 499/00 (2013.01 - EP); C07D 501/14 (2013.01 - KR); Y02P 20/55 (2015.11 - EP)
Designated contracting state (EPC)
BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0082656 A2 19830629; EP 0082656 A3 19840912; CA 1200543 A 19860211; DK 557682 A 19830622; GB 2111990 A 19830713; GB 2111990 B 19850724; GR 77832 B 19840925; HU 189206 B 19860630; KR 840002841 A 19840721; KR 860001364 B1 19860916
DOCDB simple family (application)
EP 82306634 A 19821213; CA 417400 A 19821210; DK 557682 A 19821216; GB 8235480 A 19821213; GR 820170091 A 19821216; HU 408682 A 19821217; KR 820005669 A 19821217